偏常

The article with the intercept outside aerosphere implement to study a target, consider amount of miss the target is very small approach rate mediumly with intercept process bigger, be aimed at engine to be able to offer constant thrust only, can be started for many times and have pulse job state, and do not have change the character of thrust job status, apply slant buy scale guides brought a law to design agree with the switch threshold value that course controls engine.

本文以大气层外拦截器为探究对象，考虑到脱靶量很小和拦截过程中的接近速度比较大，针对发动机只能提供常推力，能多次启动并具有脉冲工作状态，且不具有变推力工作状态的特性，运用偏置比例导引律设计了适合于轨控发动机的开关阈值。

By adopting the asymptotic expansion method, the higher order partial differential equation was transformed into the system of ordinary differential equations.

采用渐近展开法，将该控制方程——高阶偏微分方程转化为常微分方程组，求解该方程组获得应力函数，进而得到功能梯度材料中裂纹尖端应力高阶渐近场的解析式。

The results showed that the hereditary mode of handedness or preferential foot or hand-clasping is the dominant heredity of single gene of autosome,and the right type of all of them is the dominant character.

采用Slater区分单基因和多基因遗传的计算模式及Smith无偏分析方法对21个家系资料的分析表明：利手、优势足、扣手特征均为常染色体单基因显性遗传，R型为显性性状。

Individual plant can be amounted to high 35, 40cm, the bine is brawny, the flesh is qualitative, palm is Brown, old bine Chang Mu is changed character, there are the stipule of puce and cicatricle on the section; Xie Lu is lubricious, intimate circle, diameter 5, 8cm, the flesh is qualitative, luster, young leaf is a bit involute, gradually open and flat; Petiole shows aegis shape to wear be born at upside slanting in the center of blade, if form is raising small looking glass of one side face, on concentrated unripe bine, petiolar accident is differ, to all around extend, plump circle makes outward appearance of entire individual plant.

株高可达35—40cm，茎粗壮，肉质，棕褐色，老茎常木质化，节上有深褐色的托叶和叶痕；叶绿色，近圆形，直径5—8cm，肉质，有光泽，幼叶稍内卷，渐平展；叶柄呈盾状着生于叶片中心偏上部，形若举着一面面小镜，密集着生茎上，叶柄长短不一，向四面伸展，全株外观丰满圆整。

Chinese honey locust Deciduous leaf arbor, be as high as 15-30m, truncal skin grey black, shallow slit, dry reach branch to often provide thorn, thorn is conic shape is much more ramose, thick and hard straight, rod celadon, leather aperture is remarkable, wintry bud often is folded unripe, bout is even a shape compound leaf, each other gives birth to flocculus 3-7 to be opposite, flocculus grows egg form, tip blunt circle, base ministry circle, a bit deflective, small change is simple, the predestined relationship has serration, rear midrib two side and Xie Bing by white short fluff, miscellaneous sex is beautiful, axil is unripe, racemose, peduncular close by nap, calyx bell shape by nap, beautiful Huang Bai is lubricious, calyx valve all 4 number.

皂荚落叶乔木，高达15-30m，树干皮灰黑色，浅纵裂，干及枝条常具刺，刺圆锥状多分枝，粗而硬直，小枝灰绿色，皮孔显著，冬芽常叠生，一回偶数羽状复叶，有互生小叶3-7对，小叶长卵形，先端钝圆，基部圆形，稍偏斜，薄革质，缘有细齿，背面中脉两侧及叶柄被白色短柔毛，杂性花，腋生，总状花序，花梗密被绒毛，花萼钟状被绒毛，花黄白色，萼瓣均4数。

The theoretical and computational results show that an important reason resulting in eccentric wear of the inner cylinder and the pumping rod lies in the nonuniformity of the stress distribution on the outwall of the inner cylinder which yields excentralization effect of the pumping rod when swabbing fluid flows in eccentric annuli with the pumping rod moving axially in a well.

在实验上，通过不同重量百分比浓度的HPAM水溶液在内管做轴向往复运动的偏心环空中非定常流实验，把由理论公式算得的时间平均流量与实验中测得的时间平均流量做了比较，验证了本文数值计算幂律流体在内管做轴向往复运动的偏心环空中非定常流方法的正确性；上述的理论与计算表明，抽油机井杆管偏磨的一个重要原因是，在聚驱工况下，抽汲液体在抽油杆做轴向运动的井筒中流动时，抽汲液体作用在抽油杆外壁上的压力分布的不均匀性所引起的抽油杆在井筒中的偏心效应。

In studing methods,partial func-tional differential equations sum up the theories and methods of ordinary differentialequations,partial differential equations,the semigroup theory and the fixed-pointtheory in functional analysis and the basic concepts,theories and methods suit-able for the partial differential equations with delay are formed.

偏泛函微分方程在研究方法上综合了常微分方程的理论方法和泛函分析中算子半群、不动点理论以及偏微分方程的理论方法，并形成了以时滞为基本特征的泛函微分方程的基本概念、理论和方法。

When the estimator is unbiased, the numerical estimate is frequently also called unbiased.

当估计量无偏时，数字估计值也常叫做无偏的。

The clinical characters of oligodontia concluded from this study are following:(1) There is significant difference that more teeth absent and more existent teeth anomalies in patients of oligodontia/S group than in patients of oligodontia/I group, and the peg-shaped upper lateral incisor is the most frequently affected teeth with shape anomaly.(2) Both of the two groups have no significant differences in number of teeth missing between maxilla and mandible as well as that between left and right side.(3) The distribution of teeth missing is bilateral symmetry in both groups, but the frequency of teeth lost are different: excluding the third molar, in oligodontia/I group, the lower second premolar is the most frequently congenitally missing tooth followed by the upper lateral incisor, while in oligodontia/S group, the most frequently missing teeth are mandibular canine and maxillary lateral incisor. Nevertheless, the first molars are the most stable teeth in both groups.(4) In oligodonita/I group, the mean mesiodistal dimensions of all type of existent teeth are significantly smaller than normal value. It is implied that oligodontia is not an isolated phenomenon, but is related to a complex of other dental changes.

对于口腔多个恒牙先天缺失的临床特点有以下初步结论：(1)综合征型先天缺牙患者较单纯型先天缺牙患者恒牙缺失数目更多，平均分别为23.9个和14.9个，且现存牙齿有更多的形态异常，分别为7／10例（70％）和6／22例（27.3％），其中最常见的是上颌侧切牙畸形；(2)两种类型的多个恒牙先天缺失患者的缺牙数目在上下颌及左右侧之间均无差别；(3)两种类型的多个恒牙先天缺失患者在缺失牙位上均呈对称分布，但在具体牙位上有所差异：不计第三磨牙，单纯型先天缺牙最常缺失的牙位是下颌第二双尖牙、其次为上颌侧切牙；而综合征型先天缺牙最常缺失的牙位是下颌尖牙和上颌侧切牙；无论何种情况，第一磨牙均为牙列中最稳定的牙齿；(4)在单纯型先天缺牙患者中，现存恒牙的牙冠宽度较国人正常值偏小，差异显著，提示牙齿形态与多个牙先天缺失有一定相关性。

Cold places like cold stone substrate, transparency, quality nourish, low hardness, gloss strong line better varieties; soft ground nearly frozen to substrate, but the lack of transparency; just manner, then the hardness high, often with quartz quality of sand screw; hard the worst quality, hardness, opacity, gloss weak, often more impurities, and rock in the gravel. 3, defects, including impurities and cracks in the stone.

冻地的底质似冻石、透明度高、质细润、硬度低、光泽强，系较佳品种；软地的底质接近冻地，但透明度不足；刚地，则硬度偏高，常含石英质砂钉；硬地的品质最差、硬度大、不透明、光泽弱，常有较多杂质和围岩中的砂砾。3、瑕疵，包括石中的杂质和裂纹。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。